669015-70-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 669015-70-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,9,0,1 and 5 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 669015-70:
(8*6)+(7*6)+(6*9)+(5*0)+(4*1)+(3*5)+(2*7)+(1*0)=177
177 % 10 = 7
So 669015-70-7 is a valid CAS Registry Number.